Aero Terminology: Neutral Point

[@vincentcerowski8887]

When you said we should take all our flying surfaces into account when calculating, do we also take into account the horizontal stabilizer (or canard) ? Or is that not considered a flying surface?

[@Designer103]

Yes, the wings, canard, horizontal tail and vertical tail are all flying surfaces.

[@EnesMAkyol]

Amazing job! Thx for clear explanation. I need formal reference for NP formula, i dont know if its from Airplane Design book, can you share ?

[@Designer103]

There is a good formula in the book "Aerodynamics, Aeronautics and Flight Mechanics" by Barnes W. McCormick, 2nd Edition, Equation 9.23 and a few others in the same chapter. Hope this helps.

[@EnesMAkyol]

@@Designer103 Thank you

[@Chamorristaxd]

Hi, small question is neutral point same as centre of lift?

[@Designer103]

Nope. The Neutral Point is strictly dealing with stability. The longitudinal point where, if the CG is placed there, the airplane has neutral stability. The Center of Lift is the point where you can think of all of the lifting surfaces and their moment arms acting together could be replaced by lift at one point.

[@tylersayvetz]

Fantastic video series, thank you! I am wondering if you have finished the programming project you mention at the end of this video and / or would be willing to share the code. Best, from Seattle

[@Designer103]

Programming is on the back burner for now. It just takes too much time from making videos on composites and aero design. I'd like to get back to it though. Maybe for the electric motor controllers.